Invalid Date with moment js

Question

Considering this http://jsfiddle.net/2a0hsj4z/4/ , here as a snippet:

 moment.locale("en"); var start = moment("2010-10", "YYYY-MM"); var end = moment("2017-10", "YYYY-MM"); $("#chord_range").ionRangeSlider({ type: "double", grid: true, min: start.format("x"), max: end.format("x"), from: start.format("x"), to: end.format("x"), prettify: function (num) { return moment(num, 'x').format("MMMM YYYY"); } }); var slider = $("#chord_range").data("ionRangeSlider"); $(".irs-slider").click(function() { console.log(slider.result.from); }) 

 <link href="http://ionden.com/a/plugins/ion.rangeSlider/static/css/skin2.css" rel="stylesheet"/> <link href="http://ionden.com/a/plugins/ion.rangeSlider/static/css/ion.rangeSlider.css" rel="stylesheet"/> <input id="chord_range" /> <script src="http://code.jquery.com/jquery-1.11.0.js"></script> <script src="http://ionden.com/a/plugins/ion.rangeSlider/static/js/ion-rangeSlider/ion.rangeSlider.js"></script> <script src="http://momentjs.com/downloads/moment.min.js"></script> 

Why do I get an Invalid Date error when I try to drag the left/right slider (start/end value)? On startup the date shows correctly. When you touch the slider, it breaks. When I replace var start = moment("2010-10", "YYYY-MM"); with var start = moment("2012-10", "YYYY-MM"); it works:

 moment.locale("en"); var start = moment("2012-10", "YYYY-MM"); var end = moment("2017-10", "YYYY-MM"); $("#chord_range").ionRangeSlider({ type: "double", grid: true, min: start.format("x"), max: end.format("x"), from: start.format("x"), to: end.format("x"), prettify: function (num) { return moment(num, 'x').format("MMMM YYYY"); } }); var slider = $("#chord_range").data("ionRangeSlider"); $(".irs-slider").click(function() { console.log(slider.result.from); }) 

 <link href="http://ionden.com/a/plugins/ion.rangeSlider/static/css/skin2.css" rel="stylesheet"/> <link href="http://ionden.com/a/plugins/ion.rangeSlider/static/css/ion.rangeSlider.css" rel="stylesheet"/> <input id="chord_range" /> <script src="http://code.jquery.com/jquery-1.11.0.js"></script> <script src="http://ionden.com/a/plugins/ion.rangeSlider/static/js/ion-rangeSlider/ion.rangeSlider.js"></script> <script src="http://momentjs.com/downloads/moment.min.js"></script> 

Why is that?

Answer 1

you miss the step option and step will be 1, 1 is too small for (option.max - option.min) and will cause error in ion rangeSlider.So you should set a large number for step option.

$("#chord_range").ionRangeSlider({
    type: "double",
    grid: true,
    min: start.format("x"),
    max: end.format("x"),
    from: start.format("x"),
    to: end.format("x"),
    step: 100000,
    prettify: function (num) {
      return moment(num, 'x').format("MMMM YYYY");
    }
});